7.2

import java.util.Scanner;

public class Exercise_kursova_rabota {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String[] strings = sc.nextLine().split(" ");
        int[] array = new int[strings.length];
        for (int i = 0; i < strings.length; i++) {
            array[i] = Integer.parseInt(strings[i]);
        }
        int[] counter = new int[array.length];
        for (int i = 0; i < counter.length; i++) {
            for (int j = 0; j < array.length; j++) {
                if (array[i] == array[j]) {
                    counter[i]++;
                }
            }
        }
        int max = counter[0];
        for (int i = 1; i < array.length; i++) {
            max = Math.max(counter[i], max);
        }
        for (int i = 0; i < array.length; i++) {
            if (counter[i] == max) {
                System.out.println(array[i]);
                break;
            }
        }

    }
}